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We'd usually come up with a good science-related pun for this deal, but unfortunately the best ones Argon...

We're offering you a choice of four kids' science project kits for just £6.99, or all four sets for £25, saving you up to 59% off Stock Nation's prices (1)(2) (correct as of 16.7.14).

Got an aspiring Einstein roaming the house? One way to encourage their scientific curiosity without letting them loose at the power drills is by checking out today's deals. You've got a choice of any of the fantastic four below, but if you simply can't decide which they'll like best then why not just get the whole lot?

The 6-in-1 Solar-Powered Robot Machines Experiment Kit

This set contains 6 different robots to build, so you could have a robot dog one minute or a boat for your bath the next! Everything is included to build up to six different models or whatever you can come up with by yourself.

The Banana-Powered Clock Experiment Kit

A fantastically fun and fruit-flavoured item - it’s none other than a banana-powered clock! No batteries required (although you will need bananas), the kit contains a digital clock, wiring, copper and zinc strips and tape.

The Salt Water-Powered Car Experiment Kit

The Salt-Water Powered Car Experiment Kit gives kids a chance to learn about new forms of clean energy, while building and powering their very own toy. Just add salt water and go! All the materials used in this kit are environmentally safe and made from clean, non-toxic substances.

The Wind-Powered Car Experiment Kit

This kit allows you to create your very own wind-powered car, whilst understanding the importance of the environmentally friendly power source. The contents of this kit include gears, a long hexagonal axis, a small hexagonal axis, propellers, tail and stickers.